United Kingdom, Aug. 28 -- Jake Reiner feels "anger and rage" over the deaths of his parents, Rob Reiner and Michele Singer Reiner.

The When Harry Met Sally filmmaker and his wife were found stabbed to death in their Los Angeles home in December, with their youngest son Nick Reiner subsequently charged with their murders, and his older brother admitted he will "never understand" the tragedy.

Speaking to ABC7 Los Angeles, Jake said: "[Nick]'s in jail. It's like, I physically lost my parents, and then Nick was arrested. Now it's just me and Romy, and we have to navigate this by ourselves essentially.

"For me, it manifests into anger. It manifests into rage, into how unfair this was, how I didn't get a say in what happened.

"I didn't get...